You define imperialism as military conquest alone

Not true. I will use wikipedia definition: "Imperialism is the maintaining and extending of power over foreign nations, particularly through expansionism, employing both hard power (military and economic power) and soft power (diplomatic power and cultural imperialism)."

This perfectly matches both the behaviour of the US and the behaviour of Russia. This does not matches every war in history. It was coined in the 19th century to describe Napoleon III's attempts to gain political support by invasion.

You claim the Ukrainian people support their current government. Under martial law, with opposition parties banned, media consolidated, dissent criminalized, what does that support actually measure? Polls in a war zone with no free press are not evidence. They are propaganda tools.

You are getting confused with Russia. Free press is allowed in Ukraine. According to Reporters without Borders, Ukraine ranked 62nd out of 180 countries, one of the strongest performance since it's independence.

Russia has offered terms: neutrality, demilitarization, recognition of Crimea, self-determination for the Donbas.

You are forgetting also all territories currently occupied, the entirety of of Donbas and Luhansk they do not control. Neutrality and demilitarization with an imperialistic power at the border that has attached and conquered their neighbor since it was born as country means letting the door open for further conquest down the line. With no guarantee this is surrender. Russia is not willing to give anything for peace.

You ignored the core of my last message

Because it is irrelevant and a waste of time. US meddle with external country as it is an imperialistic nation. Russia meddle with external countries as it is an imperialistic nation. So what is there to discuss? Who does it more globally? The answer is the US. Who does it more in Ukraine? The answer is Russia. Now that we have this out of the way let's focus on the core of my first message.

The position that serves Ukrainian workers is peace, sovereignty, and the right to determine their own future.

And the only way we saw this can be achieved for countries that border Russia is join the EU or NATO. Poland is now free, Czechia is now free, Romania is now free, Slovakia is now free, the Baltic states are now free, Hungary is now free (but we need to wait for next election to know if this will remain true).